Gasoline filter



Patented Feb. 26, 1924.

WILLIAM FELL, OF CHICAGO, ILLINOIS, ASSIGNOR Ton-VISIBLE GASOLINE FILTERCOM- PANY, OF CHICAGO, ILLINOIS, A CORPORATION OF ILLINOIS.

' GASOLINE FILTER.

., Application filed March 5, 1920. Serial No. 363,544.

a reservoir for the ,filtered gasoline from which it is returned, to the gasoline feed line, and'thence conducted to the carburetor. The feature of the receptacle 2 is the presence of a hydrometer 5 mounted therein for the purpose of testing the filtered gasoline.

nasmuch as the present invention relates more specially to features associated with the filtering receptacle 1, this part of the device will be described. in detail, it being a .7 '0 all whom it may concern:

Be it known that I, WILLIAM FELL, acitizen of the United States, and a resident of- Chicago, in the county of Cook and State of 5 Illinois, have invented'certain new and useful Improvements in Gasoline Filters, of .which the" following is a specification.

My inventionrelaltes to improvements in gasoline filters, and-.more particularly to adevice of the character described designed to be placed in the gasoline feed line of a motor vehicle for the purpose of removing impurities from the liquid in its passage from the supply tank to the carburetor of the motor. i

The object of the present invention is to providecertain improvedfeatures of construction pertaining more particularly to. the filtering medium,.the manner in which the filtering medium is mounted within the filter, and to the means employed for giving the filtering medium a definite formation, calculated to afford a more efficient and last-- ing filtering device. As a preferable filtering medium, I employ a Chamois having the qualities of permeability and elasticity which are'well known,- together with other qualitiesv which make this material desirable for this purpose. However, other substances having like qualitiesm'ay well be substituted for chamois'.

The features of my invention hereinbefore I referred to, as well as others, are hereinafter more fully. pointed out, and in connection with'the accompanying drawings, in which y Fig. l is a front view in elevation of the filter with portions shown in vertical section, (llSClOSlIlg the featuresembodied in the invention, and Fig. 2 is a cross-Sectional view of the I filtering receptacle taken on line 22, of

Figure 1. 'A preferred construction for a filter embodying the features of my invention c01nprises two similar vertically disposed re ceptaclcs 1 and 2, joined together to form a single filtering, unit, and con'nmmicating with each other at their upper ends, by means of a passage 3 formed in a short neck portion the. latter actingto join the re ceptacles together. The receptacle 1 is thefiltering receptacle intowhich the unfiltered I of gasoline passes, the'receptacle 2 serving as cured to similar in construction.

wall portion 8 preferably inthe form of a cylindric glass tube or jar. The upper and lower edges of the glass jar 8 bear against gaskets of suitable material 9 which are in-' troduced between the contacting surfaces of the jar and the the lower cap 6 is a centrally disposed post '10 extending axially of the wall section 8, and through an aperture per cap 7 and terminating above the same.-

half its height is hollow or tubular, and forms an inlet passage 11' which communicates with an inlet connection 12 below the cap (5, and at its upper end communicates with the; interior of the receptacle through a plurality ot'lioles 13 located at the upper end of said ,inlet passage. Upwardly beyond the tubular assumes the formot' a threaded stem 14: of

reduced diameter. said jectiug upwardly through the cap 7 as before suggested, and surmounted by a nut 15 which. when tightened. draws the parts together and forms a liquid tight receptacle.

Referring now more in detail to the filterin}: medium 16 preferably of chamois as hercinbcfore suggested. the same is fashioned of this material. and prior toits introduction into the filter has i he shape of the'frustrum of a cone. its base oi maximum diameter beinu"substantially equal to that of the receptacle whereas its apex or base of miniinum diameter is provided with a hole which i. iciu't'ori'cd bya metal .eye 1.7, said eye havpost. 10. 'lh-e'margins of tlu chamois filtering medium ,or screen surrounding the base maximum diameter are preferably sea circular gasket 18 by means of a,

understood that the two receptacles are quite Thercceptacle 1. preferably consists of a lower cap G'a'nd' upper' cap, 7 and an intern'iediate cylindric' caps Sand 7. Integral with formed in the up- The post '10 tliroug 'hout substantially oneiug a diameter to receive the stemll of the" portion oi the post 10 the latter stem portion prodlum.

metal binding rin 19 acting to securely join the edges of .the c amois to the internal annular margin of the gasket. The filtering medium or screen having thus been made is assembled within the receptacle by inserting the gasket 18 between the upper edge of the glass jar 8 and the gasket 9, the eye 17 at the apex of the screen being inserted over the stem, 14 of the post 10, said eye resting upon a shoulder 20 formed at the' ction of the tubular portion 11 and the t readed stem portion 14. This shoulder 20 is preferably located some distance below the upper edge of the glass jar '8; therefore the apex of the filtering screen will be positioned a like distance below the gasket 18 representing the base of the filtering me- In the absence of any other parts associated with the filtering screen or cone as it may be called by reason of its shape, the material would merely sag or bag downwardly. However, in order to give the filtering cone a definite. shape as well as for other purposes, a comparatively light coil spring 21 is mounted above the filtering cone andbears at its lower end against the material of the filtering cone and at its upper end against the cap 7. As before suggested the spring 21 is of a light construction having a helical formation and having a diameter somewhat less than the diameter of the filtering cone at its base and somewhat; greater than its diameter at its'ap'ex. In other words it has a diameter equal to the mean diameter of the. filtering cone. The

spring is located concentrically within the receptacle and constantly bears downwardly against the material of the filtering "cone with sufficient pressure to retain the Same in a definite form; namely, two inclined wall portions 22 and 23 which converge toward the lower extremity of the filtering medium at which point the lower end ofthe spring bears. The function of thespring is at least two-fold.

First, it exerts sufiicient pressureupou the material of the filtering medium to insure its tautness to a predetermined degreejat all times thereby increasing the permeability of thematerial and the capacity .of

the same to, permit a given quantity of liquid to pass through.

Second, by reason of the" initial. formation of the filtering medium in cone shape and the presence of the spring, the filtering medium is given the shape hereinbe'fore described, and provides in reality a double wall construction and for this reason the area of the filtering surface is greatly increased not only 'by reason of the double wall, but by reason also of the conical shape ofthe wall portions 22 and 23. By increasthe filtering surface it. is.

ing the area of manifest that a larger quantity of theliquid can pass through the filtering medium, and

hence a larger quantity of the liquid filtered during a given period, or under conditions requiring the delivery of a large quantity of "gasoline to the motor in a comparatively short period. An instance of this is the use of a filter in connection with a vacuum feed system, or under other conditionswhich require a sudden and large demand upon the gasoline supply on the starting of the motor.

As a further feature of my invention, I provide in connection with the filtering cone a, cylindrio bafile plate 24 arranged to surround the upper part of the tubular portion 11 ofthe post 10. This member preferably has the form of a metal sleeve somewhat greater in diameter than the tubular portion 11 of the post 10, and preferably having an inwardly turned flange 25 at lts upper end adapted to be inserted and retained within the eye 17 of the filtering.v medium although obviously this may be completely detached from the screen and seated on the shoulder 20 at the upper-end of the tubular portion 11 of the post 10. The cylindric wall of the baflle 24 is arranged concentrically with the post 10 and spaced outwardly at a suitable distance therefrom to permit the free passage of the liquid outwardly passage through the filtering screen. Furthermore, the presence of the baffle overcomes the tendency of the liquid to strike directly against the adjacent wall 23 of the chamois screen which' 'wo'uld tend to concentrate the filtering process throughout this portion of the filtering medium whereas it is desirable .to permit uniform "filtering throughout the entire surface of the filter ing medium. 7

By reason of the particular construction employed and herein set forth as constituting the feature of my invention, a superior filtering action is secured; first, by reason of the particular conformation of the filtering medium whereby the maximum area of filteringsurfac'e-is secured, and further by the presence of a tension: or other member bearmg upon the screen in such manner as to retain the same in its desired conformation,

and further to exert sufficient pressure upon the material to get the desired degree of permeability. 1

The deviw embodying the features hereinabove set forth maybe variously modified without departing from the spirit of the in- .vention, and therefore I do not wish'to be limited except in so far as the invention is specifically set forth inthe appended claims.

I claim as my invention: i

1. In a filter the combination of a receptacle, a filtering medium 'of relatively pliable material mounted Within Said receptacle with its inner and outer portion secured in fixed position, and a member mounted in said receptacle and bearing concentrically upon said filtering mediumintermediate its inner outer portions, to retain the same in apredetermined form.

2. In a filter of the character described, the combination of acylindric receptacle, a filtering medium of relatively pliable material and of conical conformation, means for retaining the base and apex of said filterceptacled and means engaging the material of the filtering medium intermediate the base and apex thereof, and maintaining the same in a predetermined form.

3. In a filter of the character described, the combination of a receptacle, 2. filtering medium of -permeable and relatively liable material normally having a:.conica conformation, means for securing the base of said screen to the Wall of the receptacle and the apex at the center thereof, and a member mounted concentrically Within the' receptacle, and yieldingly engaging the material intermediateits base and apex.

4' In a filter of the character described, the combination of a receptacle, a filtering medium of pliable material and normally of conical conformation, means for retaining the base and apex of said filtering medium in fixed positions spaced apart axially at a less distance than the axial dimension of the filtering medium extended, and means yieldably engaging the material of the filter-,

ing medium intermediate the base and apexthereof, and maintammgthe same taut and,

in double wall conformation.

'5. In a filter of the character described, the coifibination of a receptacle, a filtering medium comprising a screen of permeable and relatively elastic material having a conical conformation, means for securing the base of said screen to the wall of the receptacle and the apex at the center thereof with the intermediate portions of the matcrial, depending loosely, and a yieldable member concentrically engaging the depend ing. material to'provide relatively taut and convergent double Walls.

6. In a filter of the character described, the combination of a receptacle, a filtering medium mounted within said receptacle, and

comprising a screen of pliable material, hav- 111g an initial conical conformation, the basemargins of said screen being fixed to the wall of said receptacle, means for fixing the apex of the screen centrally of the. receptacle, and

111g medium in fixedrelation with said re-' a yieldable member mounted concentrically within said receptacle and engaging said screen intermediate its base and apex. 7. In a filter of thecharacter described, the combination of a receptacle, a tubular inlet member extendin centrally of said recep-' tacle, a filtering medium comprising a cone shaped screen of pliable material secured at its base to the Wall of the receptacle at its center to Said inlet member, and a tension.l5 member mounted concentrically within said receptacle and yieldingly engaging" said screen intermediate the wall and inlet member of the receptacle; 8. In a filter of the character described, the combination of a receptacle," a tubular inlet member extending axially of said receptacle and provided with laterally facingdis charge openings, a filtering screen mountedin Said receptacle surrounding said'tubular. inlet member and having a wall portion a spaced laterally from said discharge openings and a cylindric baffle extending axially between discharge openings and the adjacent Wall portion of the filter. 9

9. In a filter of the character described, the combination of a receptacle, a tubular inlet member extending axially of said recep- I tacle and provided with laterally facing dis L charge openings, a filtering screen mounted 9 in said receptacle, a portion' thereof being spaced laterally from the openings of said tubular inlet member, and a cylindric bafile mounted on said inlet member and extending axially between said adjacent wall port-ion 00 of the filtering screen and said discharge openings. v i 1 10. In a filter, the combination of a re ceptacle, a tubular member in said receptools, and having an opening, communicating with the interior thereof, a screen mounted in said receptacle, a portion thereof extending over and spaced from the opening in said tubular member, and a bafile member located between said opening and the adjacent portion of said screen.

11. In a filter of the character described, the combination of a receptacle, avfiltering medium of relatively elastic material mounted in said receptacle and normally of conical .1 conformation, means for securing the base of said filtering medium to said receptacle, and a yieldable member mounted in said receptacle and bearing concentrically upon said filtering medium adjacent the apex thereof. i

12. In a filter, the combination of a receptacle, a filtering medium mounted in the upper portion of said receptacle, and comprlsing a'tubular shaped member of relatively pliable material arranged symmetrically with respectto the axis of said receptacle, and having the lower portion thereof turned back within the u or portion to form annular-1y spaced doub ewall sections,

said receptacle and comprising a normally conical shapedmember of relatively pliable material extending longitudinally from one end of the receptacle, a portion of said member adjacent the apex being doubled back within the portion adjacent the remaining portion in substantially W-shape in vertical tacle, a.filtering medium mounted in the upper portion of said receptacle, and comprising a normally conical shaped member of relatively pliable material arranged symmetrically wlth respect to the axisof said receptacle, and'having the portion thereof adjacent the apex doubled back in substantially W-conformation in vertical section, whereby an open space is formed in the lower portion of said receptacle.

16. In a filter, the combination offa recepsection, and means for retaining the material -tacle, a filtering medium mounted in the in said form.

14. In a filter, the combination of a receptacle, a filtering medium mounted in the upper portion of said receptacle and consisting of relatively -pliable material normally of conical shape, distorted into substantially W-shape in vertical section, thereby provid-' ing double wall portions converging at the lower edge of said'filtering medium, and means for retaining said filtering medium in said W-conformation.

15. In a filter,the combination of a recep- -upper portion of said receptacle, a'hd comprising a normally conical shaped member of relatively pliable material depending in inverted position from the upper portion of the receptacle, the -end portion-of said member adjacent the apex being turned upwardly within the remaining portion, forming double wall ortions converging to a lower edge spaced :1 ove the bottom of the receptacle.

In Witness whereof, I. hereunto subscribe my name this 1st day of March, A. D., 1920.

WILLIAM FELL. 

